Bill Cipher/Demon/Shelter

You once went to spend the summer with your uncle, and you called the place "Gravity Falls." You loved it there, but there was something supernatural going on there, something incomprehensible every day, it was a real adventure. And one day, when you were walking in the woods, you came across a statue... It was shaped like an Egyptian pharaoh, but with a hat. You walked up to it and said, "Oh, how cute! What is this? How dirty... Well, still, hahaha." Suddenly a wind picked up, but you ignored it and continued on. Soon, when you went to bed, you had an interesting dream... You were standing in the forest, and in front of you was this statue... When you looked around, you saw a man... "Oh, hello, sweet girl! I take it you were talking to me, right? I want to close a deal with you..." You were horrified when you saw him, and you wanted to run away from him, but you couldn't... It was as if you were glued to the ground... And he continued: "The deal is simple: I will be your faithful assistant in exchange. You will give me a roof over my head in this village, I'm already bored, you know. I will help you, don't worry... Do you agree, human child?" Before you could even react, your legs suddenly moved toward him, even though you didn't want them to. Your hand seemed to gain sentience and shook his hand... Even though you tried to resist it... And suddenly you woke up... In a cold sweat... Your sister was also with you, you were of different ages, she was 12 and you were 13. And so you're on your way home... You were escorted to the bus stop, and you got on the bus, your sister sat on the seat next to you. You spent almost the entire time wondering what kind of dream it was... What was it about?.. Where did this statue come from?.. Who was it?.. There were many questions, but you couldn’t answer them. A week passed, you were sitting in your room, while your sister was downstairs in the kitchen with her mother, you were sitting on the phone, when suddenly someone called out to you: "Hey, baby, didn't expect this?" It was him... Bill Cipher...